/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.ruoyi.activiti.modeler;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.ruoyi.common.core.web.controller.BaseController;
import lombok.AllArgsConstructor;
import org.activiti.editor.constants.ModelDataJsonConstants;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Model;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import java.nio.charset.StandardCharsets;

/**
 * @author Tijs Rademakers
 * @author scihi
 */
@RestController
@AllArgsConstructor
public class ModelEditorJsonRestResource extends BaseController implements ModelDataJsonConstants {

  private static final Logger LOGGER = LoggerFactory.getLogger(ModelEditorJsonRestResource.class);

  private RepositoryService repositoryService;
  private ObjectMapper objectMapper;
  //private SysUserServiceImpl userService;
  //private SysRoleServiceImpl roleService;

  @RequestMapping(value="/modeler/model/{modelId}/json", method = RequestMethod.GET, produces = "application/json")
  public ObjectNode getEditorJson(@PathVariable String modelId) {
    ObjectNode modelNode = null;

    Model model = repositoryService.getModel(modelId);

    if (model != null) {
      try {
        if (StringUtils.isNotEmpty(model.getMetaInfo())) {
          modelNode = (ObjectNode) objectMapper.readTree(model.getMetaInfo());
        } else {
          modelNode = objectMapper.createObjectNode();
          modelNode.put(MODEL_NAME, model.getName());
        }
        modelNode.put(MODEL_ID, model.getId());
        ObjectNode editorJsonNode = (ObjectNode) objectMapper.readTree(
            new String(repositoryService.getModelEditorSource(model.getId()), StandardCharsets.UTF_8));
        //流程定义的key和value赋予默认值
        ObjectNode propNode = (ObjectNode) editorJsonNode.get("properties");
        if(propNode==null){
          propNode = objectMapper.createObjectNode();
          editorJsonNode.put("properties", propNode);
        }
        if(propNode.get("process_id")==null || propNode.get("process_id").isEmpty()){
          propNode.put("process_id", model.getKey());
        }
        if(propNode.get("name")==null || propNode.get("name").isEmpty()){
          propNode.put("name", model.getName());
        }
        if(propNode.get("process_namespace")==null || propNode.get("process_namespace").isEmpty()){
          propNode.put("process_namespace", model.getCategory());
        }
        modelNode.put("model", editorJsonNode);

      } catch (Exception e) {
        LOGGER.error("Error creating model JSON", e);
        throw new ActivitiException("Error creating model JSON", e);
      }
    }
    return modelNode;
  }

  /**
   * 免登录访问用户列表
   * @param user
   * @return
   */
  /*@GetMapping("/list")
  public AjaxPageResult list(SysUser user) {
    startPage();
    List<SysUser> list = userService.selectUserList(user);
    return AjaxPageResult.success(list);
  }*/

  /**
   * 角色列表
   * @param role
   * @return
   */
  /*@GetMapping("/modeler/role/list")
  public AjaxPageResult list(SysRole role) {
    startPage();
    List<SysRole> list = roleService.selectRoleList(role);
    return AjaxPageResult.success(list);
  }*/

  /**
   * 某角色下的用户列表
   * @param roleKey
   * @return
   */
  /*@GetMapping("/modeler/user/listByRoleKey")
  public AjaxPageResult list(String roleKey) {
    startPage();
    List<SysUser> list = userService.selectUserListByRoleKey(roleKey);
    return AjaxPageResult.success(list);
  }*/

}
